{"product_id":"rechargeable-loud-electronic-referee-whistle-for-pe-teachers-sprint-basketball-football-games","title":"Rechargeable Loud Electronic Referee Whistle for PE Teachers, Sprint, Basketball \u0026 Football Games","description":"\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cbr\u003eThis multi-functional 3-tone electronic whistle is specially developed as an external sound source starter for sprint infrared timing system. It solves the pain points of traditional mobile triggering such as signal delay, frequent calibration and unstable Bluetooth connection, ensuring accurate and reliable data of track starting reaction time. Meanwhile, it supports multiple scenarios including referee command, group activity scheduling and physical training rhythm reminder, an essential professional equipment for sports coaches, competition referees and physical examination staff.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eCore Advantages\u003c\/strong\u003e\u003cbr\u003e✅ Zero-Delay Professional Starting Command\u003cbr\u003eDedicated external sound source for timing equipment with perfect sound synchronization, avoid millisecond-level delay error caused by mobile APP and Bluetooth speaker triggering, deliver authentic data for physical test and 100m sprint reaction training.\u003cbr\u003e✅ 3 Scene-Oriented Sound Tones\u003cbr\u003eCompetition Tone: High frequency \u0026amp; strong penetration for track starting gunshot command;\u003cbr\u003eCommand Tone: Loud mid-frequency sound for crowd evacuation and team assembly;\u003cbr\u003eTraining Tone: Stable low-frequency rhythm for interval training and formation pace cue.\u003cbr\u003e✅ 4-Level Adjustable Volume\u003cbr\u003eLevel 1 (90dB): Indoor basketball court \u0026amp; small activity room\u003cbr\u003eLevel 2 (105dB): Outdoor basketball court \u0026amp; small training site\u003cbr\u003eLevel 3 (115dB): Daily training on track and field playground\u003cbr\u003eLevel 4 (125-126dB): Long-distance command for large open-air sports events\u003cbr\u003e✅ Premium Charging \u0026amp; Battery Life\u003cbr\u003eUniversal Type-C fast charging port for easy daily charging. Large-capacity lithium battery delivers ultra-long endurance, no emergency power supply needed during long-time training and multi-round competitions.\u003cbr\u003e✅ Solid Craftsmanship \u0026amp; Humanized Details\u003cbr\u003eShock-resistant seamless body with clear damped buttons for blind operation in dark environment. Tail lanyard hole with matched lanyard for waist hanging to prevent loss during movement。\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003cbr\u003eElectronic Whistle Host ×1\u003cbr\u003eType-C Charging Cable ×1\u003cbr\u003eUser Manual ×1\u003cbr\u003eAnti-Lost Lanyard ×1\u003cbr\u003eFlannel Storage Pouch ×1\u003cbr\u003eColor Gift Box ×1\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProduct Size: 140mm×38mm\u003cbr\u003ePackage Weight: 200g\u003cbr\u003eMax Volume: 126dB\u003cbr\u003eBattery: Detachable 18650 Lithium Battery\u003cbr\u003eCharging Port: Type-C Fast Charge\u003cbr\u003eTone Gear: 4 Adjustable Gears\u003cbr\u003ePackage Dimension: 20×10×6cm\u003c\/p\u003e","brand":"queling sport","offers":[{"title":"Default Title","offer_id":67450408010032,"sku":null,"price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0810\/9385\/3488\/files\/1_1ea957b6-e012-41c6-bf83-599b708cb5ff.png?v=1785840629","url":"https:\/\/reactionx.cn\/products\/rechargeable-loud-electronic-referee-whistle-for-pe-teachers-sprint-basketball-football-games","provider":"queling sport","version":"1.0","type":"link"}